London to Mercer Island time converter

Mercer Island is 8 hours behind London. When it is 9:00 AM in London, it is 1:00 AM in Mercer Island.

London BST

Wednesday, October 21, 2026

Mercer Island PDT

Wednesday, October 21, 2026

London
United Kingdom
Wed, Oct 21
BSTUTC+1
Mercer Island
Washington, United States
Wed, Oct 21
PDTUTC-7-8h
Finding your time zone…
Shared working hours (9:00–18:00)

London to Mercer Island conversion table

Every hour of today in London and the matching time in Mercer Island. Light rows are typical working hours (9:00–18:00).

LondonMercer Island
12:00 AM4:00 PM−1 day
1:00 AM5:00 PM−1 day
2:00 AM6:00 PM−1 day
3:00 AM7:00 PM−1 day
4:00 AM8:00 PM−1 day
5:00 AM9:00 PM−1 day
6:00 AM10:00 PM−1 day
7:00 AM11:00 PM−1 day
8:00 AM12:00 AM
9:00 AM1:00 AM
10:00 AM2:00 AM
11:00 AM3:00 AM
12:00 PM4:00 AM
1:00 PM5:00 AM
2:00 PM6:00 AM
3:00 PM7:00 AM
4:00 PM8:00 AM
5:00 PM9:00 AM
6:00 PM10:00 AM
7:00 PM11:00 AM
8:00 PM12:00 PM
9:00 PM1:00 PM
10:00 PM2:00 PM
11:00 PM3:00 PM

Best time to call or meet

Both sides are at work from 5:00 PM – 6:00 PM in London (9:00 AM – 10:00 AM in Mercer Island).

Daylight saving time and the difference

The difference changes during the year because London and Mercer Island switch clocks on different dates:

  • Oct 21, 2026 – Oct 25, 2026: -8h
  • Oct 25, 2026 – Nov 1, 2026: -7h
  • Nov 1, 2026 – Mar 14, 2027: -8h
  • Mar 14, 2027 – Mar 28, 2027: -7h
  • Mar 28, 2027 – Oct 21, 2027: -8h

Distance

London and Mercer Island are 7,698 km (4,783 miles) apart in a straight line.

More conversions

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New York to Mercer IslandLos Angeles to Mercer IslandChicago to Mercer IslandToronto to Mercer IslandSão Paulo to Mercer IslandParis to Mercer IslandBerlin to Mercer IslandMoscow to Mercer IslandDubai to Mercer IslandNew Delhi to Mercer IslandBangkok to Mercer IslandSingapore to Mercer Island

Questions and answers

What is the time difference between London and Mercer Island?

Mercer Island is 8 hours behind London.

What time is it in Mercer Island when it is 9 AM in London?

When it is 9:00 AM in London, it is 1:00 AM in Mercer Island.

When is the best time to call Mercer Island from London?

Both sides are at work from 5:00 PM – 6:00 PM in London (9:00 AM – 10:00 AM in Mercer Island).

Does the time difference between London and Mercer Island change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.